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Cushion|Lab Grown|IGI

1.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG830650343

Shape and cutting style on the report: Cushion antique cut

Certificate IGI LG830650343

Diamond specifications and retailer prices

From €165 EUR
$184 USD
As of October 29, 2026
Save €859 EUR (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €1,024 EUR at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1ct lab-grown cushion diamond

This 1ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG830650343 or 830650343. Listed at 16 retailers as of October 29, 2026, with prices from €165 to €1,024, a €859 spread on the same certified stone. Reve Diamonds lists it at €1,024. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830650343
Dimensions7.52 × 5.25 × 3.21 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.52 mm5.25 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830650343
Side View
Table 62.0%Crown 37.9°Girdle: MED-STKPavilion 40°Culet: LargeDepth 61.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: €370 EUR|Low: €131 EUR|High: €1,024 EUR|Avg: €451 EUR|+4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Reve Diamonds
October 31, 2026
Retailer 10€165 EUR
Retailer 5€184 EUR
Retailer 4€192 EUR
Retailer 2€205 EUR
Retailer 12€205 EUR
Retailer 6€269 EUR
Retailer 7€340 EUR
Retailer 3€360 EUR
Retailer 1€370 EUR
Retailer 14€453 EUR
Retailer 11€658 EUR
Retailer 9€695 EUR
Retailer 13€706 EUR
Retailer 8€958 EUR
Reve Diamonds€1,024 EUR

44 data points across 15 retailers

16 retailers€165 EUR to €1,024 EUR

A
Cheapest Retailer
-
€165 EUR
$184 USD
A
Retailer 2
-
€184 EUR
$206 USD
View
Final sale: no returns
A
Retailer 3
-
€192 EUR
$214 USD
View
A
Retailer 4
-
€205 EUR
$229 USD
View
A
Retailer 5
-
€205 EUR
$229 USD
View
A
Retailer 6
-
€269 EUR
$300 USD
View
A
Retailer 7
-
€340 EUR
View
B+
Retailer 8
-
€360 EUR
$402 USD
View
B+
Retailer 9
-
€370 EUR
£325 GBP
View
B+
Retailer 10
-
€453 EUR
A$778 AUD
View
B
Retailer 11
-
€555 EUR
SGD 838 SGD
View
B
Retailer 12
-
€658 EUR
$735 USD
View
B
Retailer 13
-
€695 EUR
$776 USD
View
B
Retailer 14
-
€706 EUR
$789 USD
View
B
Retailer 15
-
€958 EUR
£843 GBP
View
Most Expensive
B
Reve Diamonds
0D8A5DAB5 · Oct 30
€1,024 EUR
$1,144 USD
View
15 more retailers have this diamond
Prices start from €165 EURSave up to €859 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.00ct Cushion
€165 EUR